Hi there My old Wk 3500 has broken down, so are looking for a repleasement, that is a bit smaller in size. Can anyone tell me how the Sound is in the new ones compared to the wk3500? Can see that they have lost the MIDI in out so i cant connect my sound module any more ( yamaha tx81z) So are wondering about what Else have changed for the better or for the worse. Any comments are welcome :-)